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GB/T 10337-2008: Raw material and pulp -- Determination of acid soluble lignin
Status: Valid GB/T 10337: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 10337-2008 | English | 149 |
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Raw material and pulp -- Determination of acid soluble lignin
| Valid |
GB/T 10337-2008
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| GB/T 10337-1989 | English | 199 |
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Raw material and pulp--Determination of acid-soluble lignin
| Obsolete |
GB/T 10337-1989
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PDF similar to GB/T 10337-2008
Basic data | Standard ID | GB/T 10337-2008 (GB/T10337-2008) | | Description (Translated English) | Raw material and pulp -- Determination of acid soluble lignin | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y30 | | Classification of International Standard | 85-010 | | Word Count Estimation | 5,540 | | Date of Issue | 2008-08-19 | | Date of Implementation | 2009-05-01 | | Older Standard (superseded by this standard) | GB/T 10337-1989 | | Quoted Standard | GB/T 747; GB/T 2677.8 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.14 (Total No.127) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for the determination of acid soluble paper-making materials and paper pulp lignin. This standard applies to the determination of various materials and paper pulp lignin content of acid-soluble. | GB/T 10337-2008: Raw material and pulp -- Determination of acid soluble lignin---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Raw material and pulp. Determination of acid. Soluble lignin
ICS 85-010
Y30
National Standards of People's Republic of China
Replacing GB/T 10337-1989
Determination of acid-soluble paper-making material and pulp lignin
Posted 2008-08-19
2009-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is GB/T 10337-1989 "paper-making material and pulp - Determination of acid soluble lignin" amendment.
This standard replaces GB/T 10337-1989.
This standard compared with GB/T 10337-1989, the main changes are as follows.
--- Increased warning;
--- Modify the contents of the reagent (Chapter 4 of this edition);
--- Modified test procedure (Chapter 6 of this edition).
The standard proposed by China National Light Industry Council.
This standard by the National Standardization Technical Committee of the paper industry.
This standard was drafted. Product Quality Supervision and Inspection Institute of Henan Province, China Pulp and Paper Research Institute.
The main drafters of this standard. Li, Yang Changjun, Ruan Jian.
This standard replaces the standards previously issued as follows.
--- GB/T 10337-1989.
The standard National Standardization Technical Committee commissioned the paper industry is responsible for interpretation.
Determination of acid-soluble paper-making material and pulp lignin
Warning. Use of this standard shall have a person experiences regular lab work. This standard does not point out all possible security issues,
Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
This standard specifies the method for the determination of acid soluble paper-making material and pulp lignin.
This standard applies to the determination of various materials and paper pulp lignin content of acid-soluble.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
Determination of GB/T 747 pulp acid-insoluble lignin
Determination of GB/T 2677.8 papermaking material lignin content of acid-insoluble
Principle 3
After according to GB/T 2677.8 or GB/T 747 separate paper pulp raw material or acid insoluble lignin filtrate obtained at a wavelength of 205nm
UV absorbance measurements.
Absorption value and the filtrate was dissolved lignin content of about 3% sulfuric acid.
4 Reagents
4.1 Unless otherwise stated, should be analyzed using analytical grade reagents and distilled or deionized water or equivalent purity.
4.2 3% sulfuric acid solution. amount of sulfuric acid (ρ20 = 1.84g/mL) 17.3mL, slowly into 500mL of water, cooled, diluted to
1000mL.
5 Instruments
General laboratory instruments and
5.1 UV spectrophotometer.
5.2 optical distance 10mm quartz cuvette.
6 Test procedure
6.1 Preparation of sample solution
6.1.1 according to GB/T 2677.8 or GB/T 747 corresponding test step, but when the second level of 3% sulfuric acid (4.2) hydrolysis, not
Reflux boiling method using a solution, but the solution was boiled to open the bottle, and continue to add hot water to the volume of the solution is always kept at a constant
560mL (raw materials) or 1540mL (pulp).
6.1.2 After filtering out the acid insoluble lignin sinking obtained supernatant, filtrate should be clear. The collected filtrate was the sample solution.
6.2 Determination of the sample solution
6.2.1 The sample solution was poured into a cuvette (5.2), and 3% sulfuric acid solution (4.2) as a reference solution with a UV spectrophotometer wave
Long 205nm measured absorbance.
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